| 초록 |
Due to increasing global energy demand with environmental concerns, solar energy has been considered a promising renewable energy sources. Especially, bulk heterojunction (BHJ) organic solar cells (OSCs) have been the focus of research owing to the merits as simple synthesis, light weight, low cost and large area fabrication process. Thiazolothiazole is a rigid, coplanar, and electron-accepting fused heterocycle due to electron-withdrawing nitrogen of imine (C=N) moiety. In this work, novel thiazolothiazole-based organic small molecules, RTzR and RFTzR were synthesized, characterized and applied as electron-donor materials for the solution-processed fabrication of organic solar cells. However, furan-bridged small molecule, RFTzR has shown better performance (2.72%) as compared to thiophene-bridged small molecule, RTzR (1.57%). The high absorption, well matched energy levels and uniform film morphology facilitated the intramolecular charge transfer and improved the performance of RFTzR-based solar cell devices. |
